What’s RTJ?
Offshore Seals Ring Type Joint Gaskets
OSA RTJ standard size gaskets are manufactured in accordance with API-6A (Surface well head and Christmas tree equipment) and API-17D (Subsea well head and Christmas tree equipment) specifications.
OSA is approved by the American Petroleum Institute (API).
Our Facilities
Established and based in Singapore, we have been manufacturing Ring Joint Gaskets and Precision Metal Components in our state of the art facility. We have over 8,000 sq. ft. where we are able to machine, fabricate, assemble and test to our customer requirements.


